H08A (TO-5-8, 0.230" diameter P.C. (pin circumference, National Semiconductor)
H08C (TO-5-8, 0.200" diameter P.C., National Semiconductor)
H10C (TO-5-10, 0.200" diameter P.C., National Semiconductor)
The number of pins (leads) can vary, but the body shape stays the same. The body may have a transparent window (e.g. for phototransistors) or other feature on the top surface.
The diameter of the pin circumference can also vary. Diameters of 0.200" and 0.230" are common.
TO-205 (this almost supersedes the TO-5 package)
3, 4, 6, 8, 10
Very easy to solder by hand.
The TO-5 is an older-style through-hole metal can package. The traditional TO-92 package has 3 pins.
The original JEDEC TO-5 specification is shown below:
The pin numbering is clockwise while looking at the package from the bottom.
The diameter of the pin circumference can vary between TO-5 packages. For example, there is a 8-pin TO-5 package with a pin diameter of 0.200”, and another with a diameter of 0.230”.